montgomery



(No Model.)

B. H. MONTGOMERY. COMBINED SWITCH AND FUSE BLOCK.

Patented Apr. 28, 1896.

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UNITED STATES PATENT OEEIcE.

EDWIN II. MONTGOMERY, OF ST. PAUL, MINNESOTA, ASSIGNOR, BY MESNE ASSIGNMENTS, OF ONE HAIiE TO MA'IHIA, THOMMES, OF SAME PLACE.

COMBINED SWITCH AND FUSE-BLOCK.

SPECIFICATION forming part of Letters Patent No. 559,340, dated April 28, 1896.

Application filed October 2, 1893. Serial No. 486,953. (No model.)

To ctZZ whom it may concern: Other binding-posts 7 and 8 are in connection Be itknown thatI,EDWINII. MONTGOMERY, with the dynamo B, and the posts 9 and 10 of St. Paul, Ramsey county, Minnesota, have are likewise connected to its line-wires. To invented certain Improvements in a Comeach of the binding-posts is connected a ter- 5 bined Switch and Fuse-Block, of which the minal 11, which is shown as a piece of sheet following is a specification. metal having underneath the spring 12 to My invention relates to improvements in press it upward and insure good contact. electric-line switches and fuse-blocks, its ob- Pivoted centrally upon the base 2 in the orject being to provide a simple device which dinary manner is the block C, preferably in 10 will serve as a single or double throw switch the form of a cross, made of wood or any and also as a fuse-block; and it consists of a other suitable nonconductor, and provided rotatable block mounted upon a base, with with a handle 13, by which it may be turned, suitable binding-posts and circuit-tern1inals and the spring 14: for pressing it down and for the line-wires and dynamos. Said block insuring good contact. Each of the members 15 provided with contacts for closing the cir- 15 and 16 of the block carries at each end a cuit between either dynamo and its linepair of contacts 17, adapted to brush the terwires if used as a double-throw switch, or minals 11. Connecting the contacts at opwith a single dynamo and its line-wires if posite ends of each member, as shown, are used merely as a single-throw switch, and is the fuses 18. These fuses are preferably 20 also provided with sets of fuses connecting slipped through openings in the block, the the contacts carried by the block. Its fuses fuses of one member of the block being are so arranged that in case one set be burned above the other, so as to be entirely insulated out the circuit can be instantly closed again therefrom. By loosening the fastening which by turning the block to bring another set of secures the fuses to the contact any one can fuses into connection, when the burned-out be quickly removed and its place supplied by fuses can be replaced. a new fuse. While but two sets of fuses are My invention further consists in the speshown in the drawings, it is evident that the cific construction and combination hereinafdevice may be constructed so that any desired ter described and claimed. number of sets may be employed without 30 In the accompanying drawings, forming departing from the idea of my invention.

part of this specification, Figure 1 is a plan In Fig. 4 is shown a modified form of terview of my improved device, showing conminal, consisting of a folded strip 19, set in a ventionally a pair of dynamos, their bindingdepression or socket in the base, between the posts and those for their line-wires, and the jaws of which the knife-edge contact carried c 5 fuses carried by the block, the position of the by the block wedges when connection is block showing the circuit of the dynamo A made. With this construction the base is closed, the dynamo B being cut out. Fig. 2 formed of porcelain or other suitable nonis a vertical central cross-section of the same. conductor. Fig. 3 is a conventional line-drawing, indi- IVhile the switchis turned to therightno cir- 9o 40 eating by full lines the position of the switch cuit is closed, but when turned to the left the with the circuit of the dynamo A closed, and contacts 17 drop into the first sockets reached by dash-lines the position of the switch when and slip between the jaws of the terminals both dynamos are cut out, and by dotted lines 19. When it is desired to throw the machine the position with the circuit of dynamo B into circuit, the switch is turned till its con- 5 5 closed; and Fig. 4 is a detail of a modified tacts pass over the terminals with which they form of circuit-terminal. are to be connected, when the movement is I11 the drawings, 2 represents the base of reversed until perfect contact is made. This the device, which is provided with a series of construction is preferable for switches where binding-posts 3 and 4 in electric connection high voltage is required. I00 50 with the dynamo A, the opposite binding- Operation: The switch being set so as to posts 5 and 6 being connected to its line-wires. couple a machine with its line-wires, as shown in Fig. 1, in case the fuses 18 are burn ed out all that is necessary to do in order to reconnect the machine is to turn the switch through a quarter-revolution, when the fuses in the other member of the block serve to close the circuit. The burned-out fuses can then be replaced. As shown conventionally in Fig. 3, the block can be turned so as to throw the other machine into circuit or set at an intermediate position to out both out.

I claim 1. A multiple-fuse block and switch, comprising in combination the rotary block of insulating material, the pairs of fuses arranged transversely thereof and of each other, the contacts connected to said fuses, and the sets of circuit-terminals in the path of the contacts whereby the pairs of fuses may be succcssively switched into circuit by the rotation of the block, substantially as described.

2. A combined fuse-block and switch, comprising in combination, the pivoted block of insulating material, provided with series of horizontal openings transverse of the block and of each other, the fuses arranged in said openings, the cont-acts connected to said fuses, and the circuit-terminals arranged in the path of said contacts, substantially as described.

3. In a switch, the combination of the base of insulating material, the circuit-terminals arranged in sockets therein, the projecting lip upon the corresponding side of each of the sockets, the switch-block pivoted to said base, the contacts carried by said block, adapted when the block is rotated in one direction to be carried over the terminals without making connection but to drop into the sockets and make connection therewith when the movement of the block is reversed, substantially as described.

l. In a switch, the combination of the rotary block of insulating material, laterallyprojecting knife-contacts carried thereby, the base of insulating material, the terminals ar ranged in sockets therein in the path of the contacts, and the projecting insulating-lips partially covering said terminals whereby the contacts are carried over the terminals with the block is oppositely rotated, substantially as described.

5. In a switch, the combination of the switch-block, its laterally-projecting knifecontacts, the base provided with sockets in the path of said contacts, the terminals consisting of folded strips arranged in said sockets, the insulatin g-coverin g for the upper jaws of the strips, whereby the block can be r0- tated in one direction continuously without making connection between the contacts and terminals, but connection may be made with any selected set of terminals by carrying the contacts just past the terminals and then reversing the movement of the block, substantially as described.

6. In a multiple-f use block and switch, the combination of the rotary block, the plurality of pairs of fuses arranged transversely of it and of each other, their knife-contacts, the base of insulating material, the terminals arranged in the path of said contacts, the insulating-protectors for said terminals preventing connection between the contacts and terminals when the block is rotated in one direction, but permitting connection when the movement of the block is reversed.

7. In a multiplefuse block and switch, the combination of the rotary block, its plurality of sets of fuses arranged transversely of it and of each other, their laterally-projecting knife-contacts, the base of insulating mate rial provided with sockets in the path of said contacts, said sockets being provided with overhanging lips on corresponding sides, and the circuit-terminals formed of folded strips arranged in said sockets with their folds extending underneath the overhanging lips of the sockets, substantially as described.

In testimony whereof I have hereunto set my hand this 20th day of September, 1893.

EDWIN H. MONTGOMERY. Witnesses:

T. D. MERWIN, H. S. JOHNSON. 

